"One of the members of a group that took part in Berryz Kobo×℃-ute "Chou HAPPY SONG (Single ver.)" karaoke contest with DAM★Tomo. She stood out there with her smiles and singing and then she joined Hello Pro Kenshuusei. She has just joined so she's the designated star rookie."[8]

On June 13, Kanazawa appeared on Bayfm's ON8 radio show with Uemura Akari. This appearance was their first time appearing on the radio. The same day, it was announced that Kanazawa would be Juice=Juice's subleader.[2]

In November, Kanazawa and the other Juice=Juice members profiles were removed from the Hello Pro Kenshuusei website. In late November, Kanazawa blogged saying that she sprained her ankle.

On January 25, Kanazawa announced that she was diagnosed with endometriosis. Her medication had been giving her sudden headaches, dizziness, and nausea, making her unable to participate in recent concerts and events. However, Kanazawa will continue activities while ongoing consultation with her doctor.[10][11]

She went to a doctor a few times and has consulted doctors since last year.Her condition was diagnosed as Endometriosis.Now she has started taking the medicines under the guidance of a doctor.The reason of the disease is still medically unknown.It has increased in young women these days.10 percent of 10-40 age women is suffering from the disease.

Staff and Juice=Juice members will unite into one and support Kanazawa from now.However, there are individual differences in the symptoms and pains.Now, owing to the medicine, she is suffering from sudden headache, vertigo, nausea.Her activities will depend on her body condition.We are worried that her symptoms may change suddenly.We ask for your kind understanding and cooperation.

We are sorry to have caused you anxiety. We'll work hard.Please cheer for Juice=Juice and Kanazawa Tomoko from now on too.

Thank you very much for always supporting Juice=Juice and Kanazawa Tomoko.

I, Kanazawa Tomoko, have been going to the hospital since the end of last year to be checked-up by the doctors, but the result of the latest medical examination was that I have been diagnosed with "endometriosis".

I apologise for causing you concern with this sudden announcement.

When I first found out about this illness, I felt extremely uneasy. But currently, I strongly feel that I don’t want to give up halfway on our dreams, with the group in the midst of our nationwide 220 performance tour which will lead up to our group’s goal of having our own performance at the Nippon Budokan, so as I go face-to-face with my illness from now on、 I intend to be positive and continue on with activities.

To the members and the staff, as well as everyone from the supportive Juice=Juice Family, I am truly sorry for causing considerable worry and concern.

In the future, I will be having activities while having consultations about my physical condition、 but just like so far, no, even beyond that! I’ll pour in all my efforts, so I humbly beg for your kindness.

Kanazawa's father, Shuhei, is a 48 years old (as of April 2016) who works as a taxi driver. She has 4 siblings: her brother older by 3 years, Kazuyuki, who works in a paint shop; her sister younger by 2 years, Fumiko, who also entered a DAM★Tomo contest for "Chou HAPPY SONG (Single ver.)" and won; and twin sisters younger by 4 years. She also has a pet cat named Nekotaro.

During her junior high school years, she took archery. When Kanazawa debuted as a member of Juice=Juice in February 2013, she was a second year high school student. As of April 2014, she had graduated from high school.

Kanazawa's given name, "Tomoko", means friend (朋; tomo) combined with child (子; ko). It's a feminine Japanese given name and surname.

Here is a list of nicknames that was used to refer to Kanazawa Tomoko:

KanaTomo (かなとも): Official nickname, given her since joining Hello Pro Kenshuusei. Used by members and fans.

Rose Quartz (ローズクォーツ): Kanazawa has a line in "Iijiwaru Shinai de Dakishimete yo" where she sings “Watashi wa Rose Quartz”, which literally means “I’m a rose quartz.” Rose quartz is a type of pink gem stone that symbolizes beauty, love, etc., so fans started associating her with that name.

She was the only member in her Kenshuusei generation who didn't audition for Morning Musume.

She is a fan of the idol group Fairies and attended their Sukkiri event in 2011. She is also close friends with Fairies member Hayashida Mahiro.

She says the source of her energy is from eating her beloved karikari ume (crunchy plum).

According to Tsunku: "She has an interesting voice. It's by no means a voice that goes well into the microphone, but it's noticeable. She also has a good vibrato. It really catches your ear. Everyone else thought so too, right? She has a round, friendly face. It's the sort of face that makes you think of sitting out on the porch in summer and eating cold noodles."

She uses Asience shampoo, and prefers to part her bangs precisely rather than loosely.

In her blog, she said "Getting used to new environments can be tough but if you deal with the hard times surely fun times will come along, And if you can put aside a little time each day for a little happiness, your eyes will focus on that time".

She considers the internet a wonderful miracle, because it ties the whole world together.

In YanYan magazine, the Juice=Juice members were asked what animal is like Kanazawa, Uemura compared her to a white tiger, Takagi compared her to a rhinoceros, Miyazaki compared her to a bear, Otsuka compared her to a deer and Miyamoto compared her to a 'cute frog'.

In a magazine, when the Juice=Juice members were asked "What member is scary when they're angry?" both Miyazaki Yuka and Uemura Akari said Kanazawa.

The Juice=Juice members say that Kanazawa's middle name is "Rose Quartz".